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Eight green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM MR38400-618K8 128GB 8x16GB DDR5 4800MHz CL40 1.1V ECC Registered RDIMM memory upgrade

SKU CH-0QJX-QX4R9

Eight 16 GB DDR5 modules deliver 128 GB of registered ECC memory at 4800 MHz for the Supermicro H13SSF motherboard

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 8X16GB

Show 30 more
  • 128 GB kit runs at full 4800 MT/s because every module matches the controller's exact rank, voltage and CL40 timing
  • Eight 16 GB Registered ECC RDIMMs populate all Supermicro H13SSF slots without down-clocking or capacity limits
  • Registered architecture offloads the memory controller so every slot stays stable at full population under sustained load
  • On-die ECC corrects single-bit errors in real time preventing silent data corruption and unexpected reboots
  • 1 V DDR5 operation lowers power draw per module while maintaining enterprise-grade signal integrity

Exact-match server upgrade

This 128GB kit contains eight 16GB DDR5 RDIMM modules rated at 4800MHz with CL40 latency and 1.1V operation. Registered ECC architecture ensures data integrity and full-capacity recognition across all populated slots. The 288-pin form factor matches the Supermicro H13SSF motherboard's memory controller requirements precisely.

Replaces mismatched or partial kits

Installing this validated kit removes the instability caused by mixing ranks, voltages, or unregistered DIMMs that the board cannot support. The jump is worth it when your current configuration fails to post at rated speed, reports corrected errors, or cannot reach the full 128GB capacity because of population-rule violations.

Sustained load behaviour

Registered buffering offloads the memory controller so every slot runs fully populated at the rated 4800MHz without down-clocking under continuous throughput. ECC corrects single-bit errors on the fly, preventing silent data corruption and unplanned reboots during extended production workloads.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $3,590.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $28.05 per GB
Pricier than about 79% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-618K8
Total capacity128 GB (8 × 16 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 8 × 16 GB DDR5 4800 MHz PC5-38400 1Rx8 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

5 more in the same range

Questions about this item

Does this 288-pin DDR5 RDIMM kit fit the Supermicro H13SSF motherboard?

Yes, the kit is verified for the Supermicro H13SSF and uses the 288-pin Registered RDIMM form factor that board requires, not UDIMM or SODIMM.

What population order should I follow when installing all eight 16 GB modules?

Consult the Supermicro H13SSF manual for the approved DIMM population sequence; installing in the wrong slots can prevent the system from recognising the full 128 GB capacity.

Will these registered ECC modules need any firmware updates or battery replacements over time?

No firmware updates or battery maintenance are required for the memory modules themselves; they operate at 1.1 V with on-die ECC for the life of the server.

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